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1 Products availableWe offer the best product range of Microprocessor Based Static ELR 4-12A, Microprocessor Based Static ELR 50-2000mA, Microprocessor Based Static, automatic changeover cum current limiter and Auto Source Changeover cum Current Limiter.
Earth Leakage Current give rise to generation of heat and result in progressive failure ofinsulation, which leads to earth faults sparking flashovers, deterioration of earthing and finallyresults into catastrophic fires which destroys costly equipments, gadgets and precious lives.It is therefore essential to detect earth leakage current well before they cross the thresholdlimits and isolate the circuit in the event of leakages. Conventional over current and shortcircuit protection device are not designed detect earth leakage currents.
Prok dv's make Static Earth Leakage Relay (ELR) with Core Balance Current Transformer ( CBCT/ ZCT) are used to detect the leakage current in an Electrical Power System. Static EarthLeakage Relay (ELR) Transmits a signal to activate the trip coil of the MCCB/ACB/OCBCONTACTOR in the event of Earth leakage, resulting in automatic isolation of the electricalpower system. Static earth leakage relay (ELR) and core balance current transformer (CBCT /ZCT) have been widely used and accepted because these have field adaptability and areeconomic.
Prok dv's make Static Earth Leakage Relay (ELR) with Core Balance Current Transformer ( CBCT/ ZCT) are used to detect the leakage current in an Electrical Power System. Static EarthLeakage Relay (ELR) Transmits a signal to activate the trip coil of the MCCB/ACB/OCBCONTACTOR in the event of Earth leakage, resulting in automatic isolation of the electricalpower system. Static earth leakage relay (ELR) and core balance current transformer (CBCT /ZCT) have been widely used and accepted because these have field adaptability and areeconomic.
Earth Leakage Current give rise to generation of heat and result in progressive failure ofinsulation, which leads to earth faults sparking flashovers, deterioration of earthing and finallyresults into catastrophic fires which destroys costly equipments, gadgets and precious lives.It is therefore essential to detect earth leakage current well before they cross the thresholdlimits and isolate the circuit in the event of leakages. Conventional over current and shortcircuit protection device are not designed detect earth leakage currents.
The design is based on the fly back topology. High switching frequency makes thecomponents sizes to decrease, and hence reduction in the size. The efficiency of the unitis greater than 80%. The input voltage is applied to the transformer primary which isswitched at high frequency controlled by the feedback. The feedback is incorporatedusing Opto - isolators. The output of the transformer is rectified using proper rectifier diodes.The output is further smoothened with the use of smoothing inductors to reduce the rippleto the desired level.
Prok dvs make Definite Time / Instantaneous Static Earth Fault Relay (EFR) is a current sensing device which is tropicalised, professionally designed and tested for protection of Generators, Transformers and Feeders. Prok dvs make Static Definite Time & Instantaneous Earth Fault Relay (EFR) can be employed with various earth fault protective schemes, which are explained in brief with figures. The magnitude of the earth fault current depends on the fault impedance and invariably the fault impedance for earth fault is higher than that for phase faults, hence the earth fault current is low compared to the phase fault currents. The fault impedance depends on the system parameter and also on type of earthing. The neutral may be solidly grounded, grounded through resistance or reactance.
Whenever the load current exceeds the Set limit, power is instantaneously switched off and resets automatically after 9 seconds. If the over load still exists, this cycle is (3Sec ON & 6Sec OFF) repeated for every 9 sec. ACCL will enter into Lock Out mode after 5 ON & OFF cycles, if over load of the DG still persists. User has to manually Reset the ACCL.
Note: However tripping cycles can be configured according to user choice
Microprocessor based Auto Source Changeover cum Current Limiter with Dual Source Energy Recording. It has Contactor logic incorporated with Electrical and Mechanical Interlock with current ratings upto 63A
RISC architecture based, intelligent state-of-the-art PNPF Prok dv's make DigitalMicrocontroller based Intelligent Automatic Power Factor Controller/Regulator/CorrectionRelay (APFCR) with on-line monitoring of line PF through industrial grade back-lit LCD Display.The Unit uses one of the tried and time tested intelligent algorithms to switch the capacitorbanks, in a most optimum combination in a shortest time for any dynamic load conditionswithout the need to select the complicated switching sequences by the user.
Application :
Prok dvs make Microcontroller Based Motor Protection Relay PD-MMPR-303 uses the state-of-the-art Microcontroller based measurement techniques for providing protection for Motors up-to 75HP. The comprehensive protection features of the relay make it ideal for Motor protection. The heart of the relay is microcontroller based reliable hardware with special algorithms to calculate the tripping time. The relay continuously monitors the Three Phase Currents to build the thermal replica of the Motor. This thermal replica is used to protect the Motor against Thermal over Loads.
Earth Leakage Current give rise to generation of heat and result in progressive failure ofinsulation, which leads to earth faults sparking flashovers, deterioration of earthing and finallyresults into catastrophic fires which destroys costly equipments, gadgets and precious lives.It is therefore essential to detect earth leakage current well before they cross the thresholdlimits and isolate the circuit in the event of leakages. Conventional over current and shortcircuit protection device are not designed detect earth leakage currents.
Prok dv's make Static Earth Leakage Relay (ELR) with Core Balance Current Transformer ( CBCT/ ZCT) are used to detect the leakage current in an Electrical Power System. Static EarthLeakage Relay (ELR) Transmits a signal to activate the trip coil of the MCCB/ACB/OCBCONTACTOR in the event of Earth leakage, resulting in automatic isolation of the electricalpower system. Static earth leakage relay (ELR) and core balance current transformer (CBCT /ZCT) have been widely used and accepted because these have field adaptability and areeconomic.
Specification:
Earth Leakage Current give rise to generation of heat and result in progressive failure ofinsulation, which leads to earth faults sparking flashovers, deterioration of earthing and finallyresults into catastrophic fires which destroys costly equipments, gadgets and precious lives.It is therefore essential to detect earth leakage current well before they cross the thresholdlimits and isolate the circuit in the event of leakages.
Prok dv's make Digital microprocessor/microcontroller based Earth Leakage Relays (ELR) withCore Balance Current Transformer (CBCT / ZCT) are used to detect leakage currents inelectrical power systems. ELR transmits a signal to activate the trip coil of theMCCB/ACB/OCB/CONTACTOR in the event of earth leakage resulting in automatic isolationof the load. ELR have been widely used and accepted because of field adaptability andare economic.
Earth Leakage Current give rise to generation of heat and result in progressive failure ofinsulation, which leads to earth faults sparking flashovers, deterioration of earthing and finallyresults into catastrophic fires which destroys costly equipments, gadgets and precious lives.It is therefore essential to detect earth leakage current well before they cross the thresholdlimits and isolate the circuit in the event of leakages. Conventional over current and shortcircuit protection device are not designed detect earth leakage currents.
Prok dv's make Static Earth Leakage Relay (ELR) with Core Balance Current Transformer ( CBCT/ ZCT) are used to detect the leakage current in an Electrical Power System. Static EarthLeakage Relay (ELR) Transmits a signal to activate the trip coil of the MCCB/ACB/OCBCONTACTOR in the event of Earth leakage, resulting in automatic isolation of the electricalpower system. Static earth leakage relay (ELR) and core balance current transformer (CBCT /ZCT) have been widely used and accepted because these have field adaptability and areeconomic.
Earth Leakage Current give rise to generation of heat and result in progressive failure of insulation, which leads to earth faults sparking flashovers, deterioration of earthing and finally results into catastrophic fires which destroys costly equipments, gadgets and precious lives. It is therefore essential to detect earth leakage current well before they cross the threshold limits and isolate the circuit in the event of leakages. Conventional over current and short circuit protection device are not designed detect earth leakage currents.
Prok dvs make Earth Leakage Relay (ELR) with Core Balance Current Transformer( CBCT / ZCT) are used to detect the leakage current in an Electrical Power System. Earth Leakage Relay (ELR) transmits a signal to activate the trip coil of the MCCB/ACB/OCB CONTACTOR in the event of Earth leakage, resulting in automatic isolation of the electrical power system. Earth leakage relay (ELR) and core balance current transformer (CBCT / ZCT) have been widely used and accepted because these have field adaptability and are economic.
Prok dvs AC Voltage Monitor is a microprocessor based voltage monitoring
and supervision relay for polyphase systems. It can monitor both Under and
Over Voltage conditions in the system. Both Under and Over Voltage are
associated with definite time tripping characteristics. It has wide range for
UV and OV settings as well as operating characteristics on the occurence
of fault.
Prok Devices Private Limited (Prok Devices Private Limited)
B-80, 2nd & 3rd floor, Rajajinagar Industrial Estate (KSSIDC),4th Main Road, Rajajinagar 6th Block, Bengaluru, Bangalore, Karnataka - 560010
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